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If it has a downstream O2 sensor the check engine light will come on but if it does not the light may not come out. In most instances it will set the check engine light.

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Q: Would light come on if problem with catalytic converter?
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Why does the catalytic converter warning light show up on your 1990 non turbo 300zx?

This light is indicating a emissions problem or failure. The catalytic converter may be operating at low efficiency which is a sign of failure.


After eliminating the catalytic converter on a 2000 Le Sabre How do you get the check engine light to disappear?

You will have to install a catalytic converter to get the light to go off.


Emission warning light on in odyssey?

The emissions warning light refers to a problem with the exhaust system. The most common problem with the exhaust system is a plugged catalytic converter.


Does the check engine light come on if the catalytic converter needs replacing?

A failed catalytic converter is one of hundreds of parts that can cause the check engine light to be on.


You replace your catalytic converter now engine light is on how could you correct this problem?

You need to have it checked for codes, there are many things that can turn on the check wngine light.


Check engine light flashing on Isuzu rodeo?

A flashing check engine light means that you have a problem with your engine that may cause harm to the catalytic converter.


How do you know if your catalytic converter is bad?

Depending on the year of the vehicle, the check engine light would illuminate.


What about the honeycomb in a converter is it safe to break apart?

There is no reason to do this. Modern catalytic converters do not restrict your exhaust flow. All you will gain by breaking it out is a check engine light coming on that will never go away. If your check engine light is already on for a catalytic converter problem removing the honeycomb will not fix it.


Would a bad catalytic converter make your check engine light go on?

Yes it would but that doesn't mean it is the cat


Can you straight pipe the catalytic converter on a 2002 ford escape?

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Why with a new catalytic converter is the check engine light on again?

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Why does my engine light blink on and off continuously?

A flashing check engine light indicates that you have problem that will damage the catalytic converter. You should have the check engine light checked very quick/tomorrow,if not sooner. converters cost over $800.00. A flashing check engine light indicates that you have problem that will damage the catalytic converter. You should have the check engine light checked very quick/tomorrow,if not sooner. converters cost over $800.00.